Electric-railway conduit



(No Model.) 2 Sheets-Sheet 1.

P. 0. BLAOKWELL.

ELECTRIC RAILWAY GONDUIT.

N0.449,196. Patented Mar. 31, 1891.

WITNESSES (No Model.) 2 Sheets-Sheet 2. P. 0. BLAGKWELL. ELECTRICRAILWAY CONDITIT.

N0. 449,196. Patented Mar. 31,1891.

WITNESSES INVENTOR W. WW 7 672i am 7% Miran Sterne Arnnr rricn.

FRANCIS O. BLACKIVELL, OF l E\V YORK, N. Y., ASSIGNOR TO THE THOMSON-.IIOUS'ION ELECTRIC COMPANY, OF CONNECTICUT.

ELECTRIC-=RAILVVAY CONDUi-T.

SPECIFICATION forming part of Letters Patent No. 449,196, dated March31, 1891.

Application filed March 5, 1889. Serial No. 301,851. (No model.)

To aZZ whom it may concern:

Be it known that I, FRANCIS O. BLAOKWELL, a citizen of the UnitedStates, residing at New York, in the county of New York, State of NewYork, have invented certain new and useful Improvements inElectric-Railway Conduits, of which the following is a specification. Myinvention relates to electric railways; and it consists of certaindevices for supportio ing the insulated supply-conductor hereinaftermore particularly specified.

My invention is illustrated in the accompanying drawings, wherein-Figure l is an end view of the conduit, show- 5 ing the slot-rails andsupply-conductors in cross-section. Fig. 2 is an enlarged front view ofthe supporting-clamp; and Fig. 3 is a top view of the same,showing theinsulator, the extension-piece, and the conductor in dotted lines.

A represents a conduit, which in this instance consists of a series oftransverse yokes E and the inclined slot-rails C C.

D is a clamp, which rests at its lower end upon the conduit, and hasside flanges E E, which hook around the yoke, thereby holding the clampin place. It is usually made of two metallic castings of other clampingfaces, which may be placed in position, embracing the yoke, and thensecured together by any suitable fastening device-as, for instance, boltF passing through the lugs ff inside the conduit. The clamp fits theyoke snugly, so as not to clog the drainage in the lower part of theconduit, and extends upwardly and forwardly, so that thesupply-conductor is in the upper part of the conduit.

G is'an insulator, of porcelain or similar non-combustible material,having its rear end beveled, as at h, to correspond with the inclinedslot-rail, and secured in a holder formed by the jaws g g upon theclamp, which, when bolted together, grip the insulator tightly.

I is a supply-conductor, which is connected to the clamp through theinsulator and the intermediate metallic extension-piece H, which isattached to the insulator and embraces a lug J 011 the rear side of theconductor.

By my invention the use of bolts or rivets is almost entirely dispensedwith, for by the single bolt '1? the clamp is secured firmly to theyoke, and the insulator, in which the piece H will previously have beenscaled, is gripped by the jaws 99', so that all the parts are ready forthe attachment of the supply-conductor.

I claim as my invention 1. The combination, in an electric-railwayconduit, of the transverse yoke and slot-rails with a clamp having clampi rig-faces engaging the yoke and an insulated supply-conductorattached to the clamp.

2. The combination, in an electric-railway conduit, of a transverse yokeand slot-rails with a clamp having clamping-faces engaging said yoke andan insulated supply-conductor supported by the clamp in the upper partof the conduit.

3. The combination, in an electric-railway conduit, of the transverseyoke and slot-rails with an upwardly-projecting metallic clamp havingflanges engaging said yoke and a supply-conductor supported by butinsulated from said clamp.

4:. The combination, in an electric railway, of the supply-conductor,the insulator, and the metallic clamp to which the supply-conductor issecured and furnishing means for attaching it to a suitable support,said clamp consisting of sections adapted to embrace the support, and afastening device for holding said sections in place.

' 5. The'combination, in an electric-railway conduit, of the transverseyoke and slot-rails with the clamp having clamping-faces engaging saidyoke made in sections, fastening devices holding said sections togetherwhen in place, and an insulated supply-conductor supported by saidclamp. I

6. The combination, in an electric-railway conduit, of a clamp restingat its lower end upon the conduit and provided with side flanges holdingit in position and an insulated conductor supported by the clamp.

7. The combination, in an electric railway, of a supply conduct-or witha clamp made in sections having clamping-faces engaging with a suitablesupport, the said sections when in place forming a holder for thesupply-conductor.

8. The combination, in an electric railway, of a support, asupply-conductor, and an in termediate clamp with a common fasteningdevice securing both the clamp to the support and the conductor to theclamp.

9. The combination, in an electric railway, of a conduit and asupply-conductor with a 5 holder embracing an insulator connected to thesupply-conductor and having at its lower end a clamp attachment to theconduit.

10. The combination,in an electric-railway conduit, of the transverseyoke, the slot-rail,

10 and supply-conductor with a metallic holder 15 of the inclinedslot-rail with aninsulator beveled to correspond with the slot-rail andthe supply-conductor connected to the insulator.

12. In an electric railway, the combination of the supply-conductor withthe porcelain or similar non-combustible insulator and a metallicextension from the insulator, embracing a lug upon the supply-conductor.

13. The combination, in an electric-railway conduit, of the clamp D,having clampingfaces engaging the conduit, the insulator G, and thesupply-conductor.

FRANCIS O.

Witnesses.

RoBT. W. BLAcKWELL, H. D. HoTcHKIss.

BLACIUVELL.

